void net_init(const uint8_t *mac_address, struct ip_info *p_ip_info, const uint8_t *hostname, bool use_dhcp) {
uint16_t i;
net_timers_init();
if (use_dhcp) {
p_ip_info->ip.addr = 0;
p_ip_info->gw.addr = 0;
p_ip_info->netmask.addr = 0;
} else {
arp_init(mac_address, p_ip_info);
}
ip_init(mac_address, p_ip_info);
if (use_dhcp) {
if (dhcp_client(mac_address, p_ip_info, hostname) < 0) {
DEBUG_PUTS("DHCP Client failed");
} else {
arp_init(mac_address, p_ip_info);
ip_set_ip(p_ip_info);
}
}
for (i = 0; i < ETH_ADDR_LEN; i++) {
s_mac_address[i] = mac_address[i];
}
uint8_t *src = (uint8_t *) p_ip_info;
uint8_t *dst = (uint8_t *) &s_ip_info;
for (i = 0; i < sizeof(struct ip_info); i++) {
*dst++ = *src++;
}
}
/* 网络模块初始化 */
void
sock_init(void)
{
struct socket *sock;
int i;
/* Set up our SOCKET VFS major device. */
/* 注册网络设备读写函数，在Linux系统当中所有的设备操作都被
* 当成对文件系统的操作
*/
if (register_chrdev(SOCKET_MAJOR, "socket", &net_fops) < 0) {
printk("NET: cannot register major device %d!\n", SOCKET_MAJOR);
return;
}
/* Release all sockets. */
for (sock = sockets; sock <= last_socket; ++sock) sock->state = SS_FREE;
/* Initialize all address (protocol) families. */
for (i = 0; i < NPROTO; ++i) pops[i] = NULL;
/* Initialize the DDI module. */
/* 设备驱动接口模块
*/
ddi_init();
/* Initialize the ARP module. */
#if 0
arp_init();
#endif
}
void tcpipinit()
{
prog_name= "kernel TCP/IP";
mu_init(&mu_generic);
mu_lock(&mu_generic);
tcpip_dirinit();
sr_init_cap_names();
sr_set_cap_name(ETH_DEV0, "eth");
sr_set_cap_name(IP_DEV0, "ip");
sr_set_cap_name(TCP_DEV0, "tcp");
sr_set_cap_name(UDP_DEV0, "udp");
#if 0
sr_enable_linger_right();
#endif
bf_init();
clck_init();
sr_init();
eth_init();
arp_init();
ip_init();
tcp_init();
udp_init();
add_default_gws();
mu_unlock(&mu_generic);
tcpip_chmod();
}
int main(int argc, char** argv){
char buf[BUFLEN];
char *dev = calloc(10, 1);
struct netdev netdev;
CLEAR(buf);
tun_init(dev);
netdev_init(&netdev, "10.0.0.4", "00:0c:29:6d:50:25");
arp_init();
while(1) {
if (tun_read(buf, BUFLEN) < 0) {
print_error("ERR: Read from tun_fd: %s\n", strerror(errno));
}
print_hexdump(buf, BUFLEN);
struct eth_hdr *hdr = init_eth_hdr(buf);
handle_frame(&netdev, hdr);
}
}
int
microps_init (void) {
if (ethernet_init() == -1) {
goto ERROR;
}
if (slip_init() == -1) {
goto ERROR;
}
if (arp_init() == -1) {
goto ERROR;
}
if (ip_init() == -1) {
goto ERROR;
}
if (icmp_init() == -1) {
goto ERROR;
}
if (udp_init() == -1) {
goto ERROR;
}
if (tcp_init() == -1) {
goto ERROR;
}
return 0;
ERROR:
microps_cleanup();
return -1;
}
void net_init(void)
{
static int first_call = 1;
if (first_call) {
/*
* Setup packet buffers, aligned correctly.
*/
int i;
net_tx_packet = &net_pkt_buf[0] + (PKTALIGN - 1);
net_tx_packet -= (ulong)net_tx_packet % PKTALIGN;
for (i = 0; i < PKTBUFSRX; i++) {
net_rx_packets[i] = net_tx_packet +
(i + 1) * PKTSIZE_ALIGN;
}
arp_init();
net_clear_handlers();
/* Only need to setup buffer pointers once. */
first_call = 0;
}
net_init_loop();
}
int
microps_init (const struct microps_param *param) {
if (ethernet_init() == -1) {
goto ERROR;
}
if (ethernet_device_open(param->ethernet_device, param->ethernet_addr) == -1) {
goto ERROR;
}
if (arp_init() == -1) {
goto ERROR;
}
if (ip_init(param->ip_addr, param->ip_netmask, param->ip_gateway) == -1) {
goto ERROR;
}
if (icmp_init() == -1) {
goto ERROR;
}
if (udp_init() == -1) {
goto ERROR;
}
if (tcp_init() == -1) {
goto ERROR;
}
if (ethernet_device_run() == -1) {
goto ERROR;
}
return 0;
ERROR:
//microps_cleanup();
return -1;
}
void net_init(mbi_t *mbi)
{
net_info_t *net = &info->hrd.dev.net;
net_init_arch(net);
net_params(mbi);
arp_init();
}
//------------------------------------------------------------------------------
int main(void)
{
tOplkError ret = kErrorOk;
const UINT8 aMacAddr[] = {MAC_ADDR};
UINT8 nodeid;
// Initialize helper modules
gpio_init();
lcd_init();
// get node ID from input
nodeid = gpio_getNodeid();
// initialize instance
memset(&instance_l, 0, sizeof(instance_l));
instance_l.cycleLen = CYCLE_LEN;
instance_l.nodeId = (nodeid != 0) ? nodeid : NODEID;
instance_l.fShutdown = FALSE;
instance_l.fGsOff = FALSE;
// set mac address (last byte is set to node ID)
memcpy(instance_l.aMacAddr, aMacAddr, sizeof(aMacAddr));
instance_l.aMacAddr[5] = instance_l.nodeId;
initEvents(&eventCbPowerlink);
arp_init((UINT8)instance_l.nodeId);
PRINTF("----------------------------------------------------\n");
PRINTF("openPOWERLINK embedded CN DEMO application\n");
PRINTF("using openPOWERLINK Stack: %s\n", PLK_DEFINED_STRING_VERSION);
PRINTF("----------------------------------------------------\n");
PRINTF("NODEID=0x%02X\n", instance_l.nodeId);
lcd_printNodeId(instance_l.nodeId);
if ((ret = initPowerlink(&instance_l)) != kErrorOk)
goto Exit;
if ((ret = initApp()) != kErrorOk)
goto Exit;
if ((ret = oplk_setNonPlkForward(TRUE)) != kErrorOk)
goto Exit;
loopMain(&instance_l);
Exit:
arp_exit();
shutdownPowerlink(&instance_l);
shutdownApp();
// Shutdown helper modules
lcd_exit();
gpio_exit();
return 0;
}
void net_init (void)
{
int32 nbufs; /* Total no of buffers */
/* Initialize the network data structure */
memset((char *)&NetData, NULLCH, sizeof(struct network));
/* Obtain the Ethernet MAC address */
control(ETHER0, ETH_CTRL_GET_MAC, (int32)NetData.ethucast, 0);
memset((char *)NetData.ethbcast, 0xFF, ETH_ADDR_LEN);
/* Initialize the random port seed */
netportseed = getticks();
/* Create the network buffer pool */
nbufs = UDP_SLOTS * UDP_QSIZ + ICMP_SLOTS * ICMP_QSIZ + 1;
netbufpool = mkbufpool(PACKLEN, nbufs);
/* Initialize the ARP cache */
arp_init();
/* Initialize UDP */
udp_init();
/* Initialize ICMP */
icmp_init();
/* Initialize the IP output queue */
ipoqueue.iqhead = 0;
ipoqueue.iqtail = 0;
ipoqueue.iqsem = semcreate(0);
if((int32)ipoqueue.iqsem == SYSERR) {
panic("Cannot create ip output queue semaphore");
return;
}
/* Create the IP output process */
resume(create(ipout, NETSTK, NETPRIO, "ipout", 0, NULL));
/* Create a network input process */
resume(create(netin, NETSTK, NETPRIO, "netin", 0, NULL));
}
static status_t
arp_std_ops(int32 op, ...)
{
switch (op) {
case B_MODULE_INIT:
return arp_init();
case B_MODULE_UNINIT:
return arp_uninit();
default:
return B_ERROR;
}
}
/* 1. 向全局协议簇数组中，注册协议簇 proto_ops结构
* 2. 向全局传输层协议链表中，注册传输层协议 proto结构
* 3. 初始化arp模块 向全局变量ptype_base中注册处理函数，供链路层向上传递数据 注册定时时间，清理arp项过期
* 4. 初始化ip模块 向全局变量ptype_base中注册处理函数，供链路层向上传递数据
*/
void inet_proto_init(struct net_proto *pro)
{
struct inet_protocol *p;
int i;
printk("Swansea University Computer Society TCP/IP for NET3.019\n");
/*
* Tell SOCKET that we are alive...
* 向SOCKET模块注册协议簇
*/
(void) sock_register(inet_proto_ops.family, &inet_proto_ops);
seq_offset = CURRENT_TIME*250;
/*
* Add all the protocols.
*/
for(i = 0; i < SOCK_ARRAY_SIZE; i++)
{
tcp_prot.sock_array[i] = NULL;
udp_prot.sock_array[i] = NULL;
raw_prot.sock_array[i] = NULL;
}
tcp_prot.inuse = 0;
tcp_prot.highestinuse = 0;
udp_prot.inuse = 0;
udp_prot.highestinuse = 0;
raw_prot.inuse = 0;
raw_prot.highestinuse = 0;
printk("IP Protocols: ");
for(p = inet_protocol_base; p != NULL;)
{
struct inet_protocol *tmp = (struct inet_protocol *) p->next;
inet_add_protocol(p);
printk("%s%s",p->name,tmp?", ":"\n");
p = tmp;
}
/*
* Set the ARP module up
*/
arp_init();
/*
* Set the IP module up
*/
ip_init();
}
PRIVATE void nw_init()
{
mq_init();
qp_init();
bf_init();
clck_init();
sr_init();
eth_init();
arp_init();
psip_init();
ip_init();
tcp_init();
udp_init();
}
//ONLY ONE INSTANCE FOR ALL POSSIBLE INTERFACES!!!!!
t_network_desc* network_init()
{
t_network_desc* network_desc;
network_desc=kmalloc(sizeof(t_network_desc));
network_desc->tx_queue=sckt_buf_desc_init();
network_desc->rx_queue=sckt_buf_desc_init();
network_desc->dev=init_8254x();
network_desc->ip=LOCAL_IP;
network_desc->netmask=LOCAL_NETMASK;
network_desc->default_gw_ip=DEFAULT_GW_IP;
network_desc->socket_desc=socket_desc_init();
arp_init();
return network_desc;
}
int net_init()
/* The order in which the init routines are called is important. */
{
extern int arp_init(void);
extern int ip_init(void);
#ifdef ASH_NET
extern void ae_eth_init(void);
ae_eth_init();
#endif
/* printf("Net Init: "); */
ip_init();
arp_init();
return(0);
}
PRIVATE void nw_init()
{
#if DEBUG & 256
{ where(); printf("starting mq_init()\n"); }
#endif
mq_init();
#if DEBUG & 256
{ where(); printf("starting bf_init()\n"); }
#endif
bf_init();
#if DEBUG & 256
{ where(); printf("starting clck_init()\n"); }
#endif
clck_init();
#if DEBUG & 256
{ where(); printf("starting sr_init()\n"); }
#endif
sr_init();
#if DEBUG & 256
{ where(); printf("starting eth_init()\n"); }
#endif
eth_init();
#if DEBUG & 256
{ where(); printf("starting arp_init()\n"); }
#endif
#if ENABLE_ARP
arp_init();
#endif
#if DEBUG & 256
{ where(); printf("starting ip_init()\n"); }
#endif
#if ENABLE_IP
ip_init();
#endif
#if DEBUG & 256
{ where(); printf("starting tcp_init()\n"); }
#endif
#if ENABLE_TCP
tcp_init();
#endif
#if DEBUG & 256
{ where(); printf("starting udp_init()\n"); }
#endif
#if ENABLE_UDP
udp_init();
#endif
}
void net_init (void)
{
int32 iface; /* index into interface table */
char str[16]; /* string to hold process name */
/* Initialize interface data structures */
netiface_init();
/* Initialize ARP cache for each interface */
for (iface=0; iface<NIFACES; iface++) {
arp_init(iface);
}
/* Initialize UDP */
udp_init();
/* Initialize ICMP */
icmp_init();
/* Create a network input process for each interface */
for (iface=0; iface<NIFACES; iface++) {
sprintf(str, "net%d_input", iface);
resume(create(netin, 4196, 5000, str, 1, iface));
}
/* Initialize the IP output queue */
ipoqueue.iqtail = ipoqueue.iqhead = 0;
ipoqueue.iqsem = semcreate(0);
/* Create an IP output process */
resume(create(ipout, 2048, 6000, "ip_output", 0));
/* Create a low-level input process that reads raw frames and */
/* demultiplexes them to the correct interface */
resume(create(rawin, 2048, 8000, "raw_input", 0));
}
/*-----------------------------------------------------------------------------------*/
void
tapif_init(struct netif *netif)
{
struct tapif *tapif;
tapif = mem_malloc(sizeof(struct tapif));
netif->state = tapif;
netif->name[0] = IFNAME0;
netif->name[1] = IFNAME1;
netif->output = tapif_output;
netif->linkoutput = low_level_output;
tapif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
low_level_init(netif);
arp_init();
/*sys_timeout(ARP_TMR_INTERVAL, (sys_timeout_handler)arp_timer, NULL);*/
}
void uos_init (void)
{
/* Configure 16 Mbyte of external Flash memory at nCS3. */
MC_CSCON3 = MC_CSCON_WS (4); /* Wait states */
/* Выделяем место для динамической памяти */
extern unsigned __bss_end[];
#ifdef ELVEES_DATA_SDRAM
/* Динамическая память в SDRAM */
if (((unsigned) __bss_end & 0xF0000000) == 0x80000000)
mem_init (&pool, (unsigned) __bss_end, 0x82000000);
else
mem_init (&pool, (unsigned) __bss_end, 0xa2000000);
#else
/* Динамическая память в CRAM */
extern unsigned _estack[];
mem_init (&pool, (unsigned) __bss_end, (unsigned) _estack - 256);
#endif
timer_init (&timer, KHZ, 20);
/*
* Create a group of two locks: timer and eth.
*/
mutex_group_t *g = mutex_group_init (group, sizeof(group));
mutex_group_add (g, ð->netif.lock);
mutex_group_add (g, &timer.decisec);
arp = arp_init (arp_data, sizeof(arp_data), &ip);
ip_init (&ip, &pool, 70, &timer, arp, g);
/*
* Create interface eth0
*/
const unsigned char my_macaddr[] = { 0, 9, 0x94, 0xf1, 0xf2, 0xf3 };
eth_init (eth, "eth0", 80, &pool, arp, my_macaddr);
unsigned char my_ip[] = { 172, 0, 0, 18 };
route_add_netif (&ip, &route, my_ip, 24, ð->netif);
h_udp_task = task_create (udp_task, 0, "udp", 65, stack_udp, sizeof (stack_udp));
init_trace();
}
//-------------------------------------------------------------------------
int _start(int argc, char *argv[])
{
// Init SMAP
if (smap_init(&g_param.eth_addr_src[0]) != 0)
return MODULE_NO_RESIDENT_END;
// Does ARP request and wait reply to get server MAC address
arp_init(&g_param);
#ifdef UDPTTY
// Init UDP tty
ttyInit(&g_param);
#endif
// Init TCPIP layer
tcp_init(&g_param);
tcp_connect();
return MODULE_RESIDENT_END;
}
void uos_init (void)
{
printf (&debug, "\nCPU speed is %d MHz\n", KHZ/1000);
/* Используем только внутреннюю память.
* Оставляем 256 байтов для задачи "idle". */
extern unsigned __bss_end[], _estack[];
mem_init (&pool, (unsigned) __bss_end, (unsigned) _estack - 256);
timer_init (&timer, KHZ, 50);
gpanel_init (&display, &font_fixed6x8);
gpanel_clear (&display, 0);
puts (&display, "Testing TCP.\r\n");
/*
* Create a group of two locks: timer and eth.
*/
mutex_group_t *g = mutex_group_init (group, sizeof(group));
mutex_group_add (g, ð.netif.lock);
mutex_group_add (g, &timer.decisec);
arp = arp_init (arp_data, sizeof(arp_data), &ip);
ip_init (&ip, &pool, 70, &timer, arp, g);
/*
* Create interface eth0
*/
const unsigned char my_macaddr[] = { 0, 9, 0x94, 0xf1, 0xf2, 0xf3 };
k5600bg1_init (ð, "eth0", 80, &pool, arp, my_macaddr);
unsigned char my_ip[] = { 192, 168, 20, 222 };
route_add_netif (&ip, &route, my_ip, 24, ð.netif);
task_create (tcp_task, 0, "tcp", 20,
stack_tcp, sizeof (stack_tcp));
// task_create (poll_task, 0, "poll", 1,
// stack_poll, sizeof (stack_poll));
task_create (console_task, 0, "cons", 10,
stack_console, sizeof (stack_console));
}
void inet_proto_init(struct net_proto *proto)
{
int i;
struct inet_protocol *p;
(void)sock_register(inet_protocol.family,&inet_protocol);
for(i = 0;i < SOCK_ARRAY_SIZE;i++)
{
tcp_prot.sock_array[i] = NULL;
udp_prot.sock_array[i] = NULL;
raw_prot.sock_array[i] = NULL;
}
tcp_prot.inuse = 0;
tcp_prot.highestinuse = 0;
udp_prot.inuse = 0;
udp_prot.highestinuse = 0;
raw_prot.inuse = 0;
raw_prot.highestinuse = 0;
printk("IP Protocols:\n");
for(p = inet_protocol_base ; p!=NULL; )
{
struct inet_protocol *tmp = p->next;
inet_add_protocol(p);
printk("%s%s",p->name,tmp?",":"\n");
}
arp_init();
ip_init();
return;
}
//------------------------------------------------------------------------------
int main(void)
{
tOplkError ret = kErrorOk;
const UINT8 aMacAddr[] = {MAC_ADDR};
UINT8 nodeid;
#if (CONFIG_CDC_ON_SD != FALSE)
tCdcBuffInfo cdcBuffInfo;
#endif
// Initialize helper modules
gpio_init();
lcd_init();
// get node ID from input
nodeid = gpio_getNodeid();
// initialize instance
memset(&instance_l, 0, sizeof(instance_l));
instance_l.cycleLen = CYCLE_LEN;
instance_l.nodeId = (nodeid != 0) ? nodeid : NODEID;
instance_l.fShutdown = FALSE;
instance_l.fGsOff = FALSE;
#if (CONFIG_CDC_ON_SD != FALSE)
if (sdcard_getCdcOnSd(pszCdcFilename_g, &cdcBuffInfo) != 0)
{
goto Exit;
}
instance_l.pCdcBuffer = (unsigned char*)cdcBuffInfo.pCdcBuffer;
instance_l.cdcBufferSize = cdcBuffInfo.cdcSize;
#else
instance_l.pCdcBuffer = (unsigned char*)aCdcBuffer;
instance_l.cdcBufferSize = sizeof(aCdcBuffer);
#endif
// set mac address (last byte is set to node ID)
memcpy(instance_l.aMacAddr, aMacAddr, sizeof(aMacAddr));
instance_l.aMacAddr[5] = instance_l.nodeId;
initEvents(&instance_l.fGsOff, &eventCbPowerlink);
arp_init((UINT8)instance_l.nodeId);
PRINTF("----------------------------------------------------\n");
PRINTF("openPOWERLINK console MN DEMO application\n");
PRINTF("using openPOWERLINK Stack: %s\n", PLK_DEFINED_STRING_VERSION);
PRINTF("----------------------------------------------------\n");
PRINTF("NODEID=0x%02X\n", instance_l.nodeId);
lcd_printNodeId(instance_l.nodeId);
if ((ret = initPowerlink(&instance_l)) != kErrorOk)
goto Exit;
if ((ret = initApp()) != kErrorOk)
goto Exit;
if ((ret = oplk_setNonPlkForward(TRUE)) != kErrorOk)
goto Exit;
loopMain(&instance_l);
Exit:
#if (CONFIG_CDC_ON_SD != FALSE)
sdcard_freeCdcBuffer(&cdcBuffInfo);
#endif
arp_exit();
shutdownPowerlink(&instance_l);
shutdownApp();
// Shutdown helper modules
lcd_exit();
gpio_exit();
return 0;
}
process netin(void) {
status retval; /* return value from function */
recv_packets = 0; /* initialize */
netbufpool = mkbufpool(PACKLEN, UDP_SLOTS * UDP_QSIZ +
ICMP_SLOTS * ICMP_QSIZ + ICMP_OQSIZ + 1);
if (netbufpool == SYSERR) {
kprintf("Cannot allocate network buffer pool");
kill(getpid());
}
/* Copy Ethernet address to global variable */
control(ETHER0, ETH_CTRL_GET_MAC, (int32)NetData.ethaddr, 0);
/* Indicate that IP address, mask, and router are not yet valid */
NetData.ipvalid = FALSE;
NetData.ipaddr = 0;
NetData.addrmask = 0;
NetData.routeraddr = 0;
/* Initialize ARP cache */
arp_init();
/* Initialize UDP table */
udp_init();
currpkt = (struct netpacket *)getbuf(netbufpool);
/* Do forever: read packets from the network and process */
//kprintf("[netin]: start to read packets\r\n");
while(1) {
retval = read(ETHER0, (char *)currpkt, PACKLEN);
if (retval == SYSERR) {
panic("Ethernet read error");
}
/* Convert Ethernet Type to host order */
eth_ntoh(currpkt);
/* Demultiplex on Ethernet type */
switch (currpkt->net_ethtype) {
case ETH_ARP:
arp_in(); /* Handle an ARP packet */
continue;
case ETH_IP:
/* Convert IP packet to host order */
if (ipcksum(currpkt) != 0) {
kprintf("checksum failed\n\r");
continue;
}
if (currpkt->net_ipvh != 0x45) {
kprintf("version failed\n\r");
continue;
}
/* Convert IP packet to host byte order */
ip_ntoh(currpkt);
if ( (currpkt->net_ipdst != IP_BCAST) &&
(NetData.ipvalid) &&
(currpkt->net_ipdst != NetData.ipaddr) ) {
continue;
}
/* Demultiplex UDP and ignore others */
if (currpkt->net_ipproto == IP_UDP) {
//kprintf("[netin]: UDP# %d\r\n", ++recv_packets);
udp_in();/* Handle a UDP packet */
}
continue;
default: /* Ignore all other Ethernet types */
kprintf("\n");
continue;
}
}
}
int main(int argc, char *argv[])
{
dhcpctl_handle conn = NULL;
char *conffile=NULL;
char ch;
name = strdup("OMAPI");
openlog("dhcparpd", LOG_PID, LOG_DAEMON);
/* Parse Commandline Options */
while((ch = getopt(argc, argv, "c:dh")) != -1) {
switch(ch){
case 'c':
conffile = strdup(optarg);
break;
case 'd':
do_daemonise=0;
break;
case 'h':
usage(argv[0]);
return 0;
default:
fprintf(stderr, "Unknown option '%c'!", ch);
usage(argv[0]);
return 1;
}
}
/* Try a default configfile if non specified */
if (conffile==NULL) {
conffile = strdup("/etc/dhcparpd.conf");
}
if (parse_config(config,conffile)) {
fprintf(stderr,"Unable to parse configfile: %s\n",
conffile);
return 1;
}
free(conffile);
/* Daemonise */
if (do_daemonise) {
daemonise(argv[0]);
put_pid(pidfile);
}
parse_mappings();
conn = dhcpd_connect(servername, port, name, key);
if (!conn) {
Log(LOG_CRIT, "failed to connect to dhcp server");
return 1;
}
arp_init(interface,conn);
init_event();
init_netlink();
if (pcap_init(interface))
return 1;
Log(LOG_NOTICE, "Ready for action! Lets Go...");
run();
return 0;
}
int main(void)
{
/* constants */
const ethernet_address my_mac = {'<','P','A','K','O','>'};
/* init io */
DDRB = 0xff;
PORTB = 0xff;
DDRE &= ~(1<<7);
PORTE |= (1<<7);
/* init interrupts */
interrupt_timer0_init();
interrupt_timer1_init();
interrupt_exint_init();
/* init arch */
uart_init();
spi_init();
i2c_init();
timer_init();
DBG_INFO("\n\n");
DBG_INFO(B_IBLUE "avr-net ver %s build time: %s %s\n","1.0",__DATE__,__TIME__);
/* init utils */
fifo_init();
/* init dev */
uint8_t ret = ds1338_init();
DBG_INFO("ds1338_init ret = 0x%x\n",ret);
enc28j60_init((uint8_t*)&my_mac);
/* init sys */
// fat_init();
//rtc_init((0<<RTC_FORMAT_12_24)|(0<<RTC_FORMAT_AM_PM));
ethernet_init(&my_mac);
const ip_address ip = NET_IP_ADDRESS;
const ip_address gw = NET_IP_GATEWAY;
const ip_address nm = NET_IP_NETMASK;
ip_init(&ip, &nm, &gw);
// ip_init(0,0,0);
arp_init();
udp_init();
// tcp_init();
// echod_start();
stdout = DEBUG_FH;
// sd_init(sdcallback);
// sd_interrupt();
// httpd_start();
dhcp_start(dhcp_callback);
// netstat(stdout, NETSTAT_OPT_ALL);
// timer_t timer = timer_alloc(timer_callback);
// timer_set(timer, 5000, TIMER_MODE_PERIODIC);
// DBG_INFO("Before sei\n");
/* global interrupt enable */
sei();
for(;;)
{
}
return 0;
}
static int
setup (void) {
ethernet_init();
arp_init();
return 0;
}
int main(void)
{
t_addr *pkt;
struct net_iface iface;
struct ether_header *reth;
struct ether_arp *rarp;
unsigned char dest_mac[6];
unsigned char dest_ip[4];
//u_int16_t ethtype;
//#ifndef DEBUG
// t_addr* next_packet;
// int i=nf_tid();
//
// if(i== 0)
// {
// nf_lock(LOCK_INIT); // should get it on the first attempt
// nf_pktout_init();
// nf_pktin_init();
// }
// else
// {
// nf_stall_a_bit();
// nf_lock(LOCK_INIT); // should not get it
// }
// nf_unlock(LOCK_INIT);
//
//#endif
//test_this();
// iface is not shared, it's on the stack
arp_init(&iface.arp);
iface.mac[0] = 0x00;
iface.mac[1] = 0x43;
iface.mac[2] = 0x32;
iface.mac[3] = 0x46;
iface.mac[4] = 0x4e;
iface.mac[5] = 0x00;
iface.ip[0] = 192;
iface.ip[1] = 168;
iface.ip[2] = 0;
iface.ip[3] = 100;
//dest_mac[0] = 0x70;
//dest_mac[1] = 0x56;
//dest_mac[2] = 0x81;
//dest_mac[3] = 0xa9;
//dest_mac[4] = 0x2c;
//dest_mac[5] = 0x39;
dest_mac[0] = 0xff;
dest_mac[1] = 0xff;
dest_mac[2] = 0xff;
dest_mac[3] = 0xff;
dest_mac[4] = 0xff;
dest_mac[5] = 0xff;
dest_ip[0] = 192;
dest_ip[1] = 168;
dest_ip[2] = 0;
dest_ip[3] = 185;
//ethtype = ETHERTYPE_ARP;
//only run this program on thread 0
if (nf_tid() != 0)
{
while (1) {}
}
// initialize
nf_pktout_init();
nf_pktin_init();
// allocate an output buffer
pkt = nf_pktout_alloc(PKT_SIZE);
// setup the ioq_header
fill_ioq((struct ioq_header*) pkt, 2, PKT_SIZE);
// setup the ethernet header
//struct ether_header *reth = (struct ether_header*) (pkt + sizeof(struct ioq_header));
reth = (struct ether_header*) (pkt + sizeof(struct ioq_header));
// setup the ethernet arp
//struct ether_arp *rarp = (struct ether_arp*) (pkt + sizeof(struct ioq_header) + sizeof(struct ether_header));
rarp = (struct ether_arp*) (pkt + sizeof(struct ioq_header) + sizeof(struct ether_header));
// start putting things into the packet
// ethernet
memcpy(reth->ether_shost, &iface.mac, ETH_ALEN);
memcpy(reth->ether_dhost, &dest_mac, ETH_ALEN);
//memcpy(reth->ether_type, htons(ethtype), sizeof(u_int16_t));
//memcpy(reth->ether_type, ðtype, 2);
//memcpy(reth->ether_type, &mytype, 2);
reth->ether_type = ETHERTYPE_ARP;
// arp header
rarp->ea_hdr.ar_hrd = htons(ARPHRD_ETHER);
rarp->ea_hdr.ar_pro = htons(ETHERTYPE_IP);
//rarp->ea_hdr.ar_pro = htons(0x0800);
rarp->ea_hdr.ar_hln = 6;
rarp->ea_hdr.ar_pln = 4;
rarp->ea_hdr.ar_op = htons(ARPOP_REQUEST);
// arp ethernet
// source
memcpy(rarp->arp_sha, &iface.mac, ETH_ALEN);
memcpy(rarp->arp_spa, &iface.ip, 4);
// target
memcpy(rarp->arp_tha, dest_mac, ETH_ALEN);
memcpy(rarp->arp_tpa, dest_ip, 4);
// send it
nf_pktout_send(pkt, pkt + PKT_SIZE);
nf_pktout_send(pkt, pkt + PKT_SIZE);
nf_pktout_send(pkt, pkt + PKT_SIZE);
nf_pktout_send(pkt, pkt + PKT_SIZE);
//free
//nf_pktin_free(pkt);
// start in on replying
//while(1)
//{
// pkt = nf_pktin_pop(); // test for next_packet
// if(!nf_pktin_is_valid(pkt))
// continue;
// process_eth(&iface, pkt);
// nf_pktin_free(pkt);
//}
//memcpy(reply.data, pkt->head, pkt->len);
//struct ioq_header *reply_ioq = pkt_pull(&reply, sizeof(struct ioq_header));
//fill_ioq(reply_ioq, ioq->src_port, reply.len);
//struct ether_header *reply_ether = pkt_pull(&reply, sizeof(struct ether_header));
//struct ether_arp *reply_arp = pkt_pull(&reply, sizeof(struct ether_arp));
// copy source ip and mac to target
//memcpy(reply_arp->arp_tha, reply_arp->arp_sha, ETH_ALEN);
//memcpy(reply_arp->arp_tpa, reply_arp->arp_spa, 4);
// copy this interface's mac and ip to source
//memcpy(reply_arp->arp_sha, iface->mac, ETH_ALEN);
//memcpy(reply_arp->arp_spa, iface->ip, 4);
//reply_arp->ea_hdr.ar_op = htons(ARPOP_REPLY);
//memcpy(reply_ether->ether_shost, iface->mac, ETH_ALEN);
//memcpy(reply_ether->ether_dhost, reply_arp->arp_tha, ETH_ALEN);
//pkt_push_all(&reply);
//send_pkt(reply.data, reply.len);
return 0;
}
/*
*Init a etherner interface.
*
*@param eth_if, if hander.
*
*@return err code.
*
**/
err_t ethernetif_initParams(Netif_t *eth_if, char *mac, char *ip, char *gatway, char *mask, err_t (*low_output)(U8_t *,U32_t )){
//初始化 网络接口类型
eth_if->If = IFTYPE_ETHERNET;
//网络接口 硬件地址长度
eth_if->haLen = 6;
//网络接口 协议地址长度
eth_if->paLen = 4;
//协议地址的 类型
eth_if->paType = PROTYPE_IP;
//当前处理的协议栈 位置，即当前协议名称
eth_if->pType = PROTYPE_UNKNOWN;
//复制传入硬件地址
memcpy(eth_if->hAddr, mac, eth_if->haLen);
//复制传入协议地址
n2IP_IPv4Cast(eth_if->pAddr, ip);
//复制网关的协议地址
n2IP_IPv4Cast(eth_if->pgAddr, gatway);
//复制网关协议地址
n2IP_IPv4Cast(eth_if->pmAddr, mask);
//赋值 底层输出函数， 一般连接网卡驱动层
eth_if->low_output = low_output;
//底层输入函数， 连接网卡驱动层
eth_if->low_input = ethernet_poll;
//从网络接入层提交到TCP/IP协议栈中，即n2IP内核中
eth_if->poll = n2IP_poll;
//从TCP/IP协议栈 输出数据到网络接口层
eth_if->drag = ethernetif_drag;
/*以下元素 是kernel能完整传递不同 层数据同时保证层间松耦合性的关键，
*由netif只传递数据的指针，而不是发生上下文的拷贝；如果需要回溯数据内容，
*直接由额外的指针索引。
**/
//输入数据 句柄
eth_if->inBuf = NULL;
//输入数据 大小
eth_if->ibSize = 0;
//输出数据 大小
eth_if->obSize = 0;
//输出数据 句柄
eth_if->outBuf = NULL;
//show the log info of the if.
ethernetif_show(eth_if);
//init ids.
eth_if->ip_id = 0x01;
eth_if->icmp_id = 0x01;
//进行必要的初始化步骤
//初始化netif的arp表项
eth_if->arp_size = ARP_CACHE_MAX_ENTRY;
arp_init(eth_if);
//初始化netif的udp表项
eth_if->ucb_size = UDP_SOCKET_MAX_SIZE;
udp_init(eth_if);
return ERR_NONE;
}
int main(int argc, char **argv)
{
char dev_if[16];
int opt;
int err = 0;
int daemonize = 0;
int log_level = LOG_WARN;
char *log_file = NULL;
memset(dev_if, '\0', sizeof(dev_if));
strncpy(dev_if, PHOST_DEFAULT_TAP_DEVICE, sizeof(dev_if) - 1);
phost_set_program_name(basename(argv[0]));
/* parse options */
while(1){
opt = getopt(argc, argv, "Dd:i:p:l:n:v");
if(opt < 0){
break;
}
switch(opt){
case 'D':
daemonize = 1;
break;
case 'd':
if(optarg){
if(atoi(optarg) < LOG_LEVEL_MAX){
log_level = atoi(optarg);
}
else{
phost_print_usage();
exit(1);
}
}
else{
err |= 1;
}
break;
case 'i':
if(optarg){
memset(dev_if, '\0', sizeof(dev_if));
strncpy(dev_if, optarg, sizeof(dev_if) - 1);
}
else{
err |= 1;
}
break;
case 'p':
if(optarg){
memset(pid_dir, '\0', sizeof(pid_dir));
strncpy(pid_dir, optarg, sizeof(pid_dir) - 1);
}
else{
err |= 1;
}
break;
case 'l':
if(optarg){
memset(log_dir, '\0', sizeof(log_dir));
strncpy(log_dir, optarg, sizeof(log_dir) - 1);
}
else{
err |= 1;
}
break;
case 'n':
if(optarg){
memset(host_name, '\0', sizeof(host_name));
strncpy(host_name, optarg, sizeof(host_name) - 1);
}
else{
err |= 1;
}
break;
case 'v':
log_file = LOG_OUT_STDOUT;
log_level = LOG_DEBUG;
break;
default:
err |= 1;
}
}
if(err){
phost_print_usage();
exit(1);
}
if(log_file == NULL){
log_file = (char*)malloc(sizeof(char)*(strlen(log_dir)+strlen(PHOST_LOG_FILE)+strlen(dev_if)+3));
sprintf(log_file, "%s/%s.%s", log_dir, PHOST_LOG_FILE, dev_if);
}
/* check if this process is run with root privilege */
if(getuid() != 0){
fprintf(stderr, "[ERROR] `%s' must be run with root privilege.\n", program_name);
exit(1);
}
/* register signal handler */
signal(SIGINT, phost_handle_signals);
signal(SIGTERM, phost_handle_signals);
signal(SIGPIPE, SIG_IGN);
signal(SIGUSR1, SIG_IGN);
signal(SIGUSR2, SIG_IGN);
/* initializations */
if(log_init(log_level, log_file) < 0){
fprintf(stderr, "[ERROR] cannot initialize logger.\n");
exit(1);
}
if(daemonize && (phost_daemonize() < 0)){
fprintf(stderr, "[ERROR] cannot daemonize.\n");
exit(1);
}
if(strncmp(dev_if, "tap", 3) != 0){
if(ethdev_init(dev_if) < 0){
fprintf(stderr, "[ERROR] cannot initialize Ethernet device (%s).\n", dev_if);
exit(1);
}
trx_init(ethdev_read, ethdev_send);
}
else{
if(tap_init(dev_if) < 0){
fprintf(stderr, "[ERROR] cannot create tap device (%s).\n", dev_if);
exit(1);
}
trx_init(tap_read, tap_send);
}
phost_set_global_params();
phost_create_pid_file(host_name);
cmdif_init(dev_if, stats_udp_send_update);
arp_init(host_mac_addr, host_ip_addr);
ipv4_init(host_ip_addr, host_ip_mask);
udp_init(stats_udp_recv_update);
pkt_dump = (char*)malloc(sizeof(char)*PKT_BUF_SIZE*2);
while(run){
phost_run();
cmdif_run();
arp_age_entries();
}
free(pkt_dump);
cmdif_close();
tap_close();
phost_delete_pid_file(host_name);
phost_unset_global_params();
log_close();
return 0;
}